github: bump paths-filter version (freifunk-gluon#3180)

Get rid of Node deprecation warnings.

Link: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/

Signed-off-by: David Bauer <mail@david-bauer.net>
(cherry picked from commit 981998e)
Signed-off-by: Tom Herbers <mail@tomherbers.de>

.github/workflows/build-gluon.yml

@@ -28,7 +28,7 @@ jobs:
       - uses: actions/checkout@v4
 
       # Filter targets based on changed files
-      - uses: dorny/paths-filter@v2
+      - uses: dorny/paths-filter@v3
         id: filter
         with:
           filters: .github/filters.yml